Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Frame of reference for Fermi Golden Rule

  1. May 27, 2012 #1
    Hi guys. I am currently studying Sub-atomic physics and it seems to me that there are different formulas that work in different frame of reference.

    In particular, I would like to ask:

    1. Which frame should we use in applying Fermi's Golden Rule? (I've read somewhere that the matrix element is invariant, but I assume the density of states must be frame dependent)

    2. The resolution of a probe is defined by its de Broglie wavelength. Once again, this is frame dependent, so which frame should we use to determine a probe's resolution.

    3. Is there a general rule of thumb when deciding which frame to use when applying a formula? (It seems to me that most of the problems are done in Zero momentum frame, or is it?)

    Thank you so much guysss!
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted